99. What actually causes PMS?!

We've all experienced some form of PMS before! It's soooo common but that doesn't mean it's NORMAL! Moderate to severe PMS is the result of a hormonal imbalance.Here's what we get into:You produce estrogen in your follicular phase (the phase after your period)You produce progesterone in your luteal phase (because ovulation creates progesterone & your luteal phase is after ovulation)Progesterone declines midway through your luteal phase if you're not pregnant & this drop in hormones&nb...